Gas cutting machine



May 12, 1936. GLAUM, JR; E v 2,040,478

GAS CUTTING MACHINE Filed Dec. 12,-1954 3 Sheets-Sheet 1 May 12, 1936.

J. c. GLAUh h, JR., ET AL ,0

GAS CUTTING MACHINE Filed Dec. 12, 1934 :5 Sheets-Sheet 2 lfzuantons: GJP. SZOMfi/QW Mam .fkec M 3 Sheets-Sheet 3 w w w w w,

a 6% 2 3% am y 1936' J. c. GLAUM, JR., ET AL GAS CUTTING'MACHI'NE FiledDec. 12, 1934 \h FTVBG .y

Patented May 12, 1936 PATENT OFFICE 2,040,478 GAS CUTTING MACHINE JohnGlaum, 3n, and Fred Stoneberg, Chicago, 111.

Application December 12, 1934, seriai'No. 151,231 10 Claims. (01.266-23) This invention relates to metal working devices, and moreparticularly to gas cutting apparatus having novel means foradjustingthe torchholding mechanism.

Another object of the invention is the provision of new and improvedmeans for adjustably mounting the torch supporting mechanism on thecarriage together with novel means for justing the parts of the torchholding mecha-.

nism. I

A further object of the invention isthe provision of new and improvedmechanism for propelling the carriage and for changing the speed.

- thereof during the cutting operation.

A still further object of the invention isthe provision of a new andimproved torch holding mechanism having novel means for adjusting thetorch whereby the same may be-adjusted to cut .bevels of any desireddegree.

Another object of the invention is the provision of a new and improvedchange speed mechanism for gas cutting apparatus that is provided withnovel means for changing speed and 05 locking certain ,parts while thesame are in inoperative position.

A further object of the invention is the provision of a new and improvedmechanism for elevating one side ofthe carriage while the same is beingprepared for cutting along circular lines. Another object of theinvention is the provision of a new and improved gas cutting machinethat is inexpensive to manufacture, efllcient in operation, adjustableto various speeds, and having a torch capable of universal adjustment.

Other and further objects and advantages will appear from the followingdescription, taken in connection with the accompanying drawings, inwhich:

Fig. 1 is a plan view or the device;

Fig. 2 is a section on'the line 2-2 of Fig. 1;

:Fig. 3 is a side elevation of the device with parts broken away andparts in section;

Fig. 4 is a perspective view of a portion of the carriage showing theradiusmeinber in position thereon;

Fig. 5 is a section on the line and 6;

Fig. 6 is a section on and 5;

Fig. 7 is .a vertical section on the line 1-'I of Fig. 1 with partsbroken away; and

' Fig. 8 is a section on the line 8-4 of Fig.

Referring now to the drawings, the reference character I! designates thecarriage on which is 5-5 of Figs. 3

the line 6-6 of Figs. 3

be adjusted to take up ing the journals or journal the journals or-boltsmounted the torch holding and adjusting mechanism H and the torch I20. I

The carriage comprises the body portion ll which may be of any suitableconstruction. In' the form of device selected to illustrate one em-.bodiment of the invention, the body is in the form of a, hollow casing12 opening downwardly. Preferably, though not necessarily, this casingis cast and is provided at its forward end portion with lugs 13 and I4extending inwardly from the side walls of the casing adjacent the loweredge thereof. f I Journal blocks 15 (see Fig. 2) are secured to the lugs13 and. M, as by means of. bolts or screws I6 and I] which extendthrough the ends of said blocks and engage threaded openings in Thebearing blocks receive the ends or an axle 18 on which is rigidlysecured the driving wheels 19 and'2l for supporting the for'- ward endof the apparatus. Preferably, though not necessarily, shims 22 areinserted between the bearing blocks 15 and the corresponding lugs 13 andII (see Fig. 2) so. that the bearings may the wear in the worm and geardrive by the removal of the shims from time to time as wear occurs, aswill presently appear. The rear end of the body is provided withrearwardly extending projections 23 and 24 which are provided withvertical bearings for. receivbolts 25 and 26 of the caster wheels 21 and28 (see Figs. 1 and 3). The shanks 29 of the casters are swiveled on theboltsor journals 25 and 26. The upper ends of 25 and 26 are threaded forreceiving the lock nuts 3| (see Fig. 3) by means of the tightening ofwhich the casters may be locked in adjusted position. When the device isused for making curved or circular cuts, the nuts 3| are loosened so asto provide the necessa y or swiveling of the casters 21 and 28. I

' In the use of a gas cutting apparatus, it is necessary that thecarriage be provided with mechanism for driving the same at difierentspeeds. depending upon .the different conditions under which it isoperated. In the present invention, a variable speed electric motor 32and change speed mechanism 33 are employed for securing the desiredspeed of the carriage under any and all conditions. e r

The change speed mechanism provides for four-speed changes and arheostat 34 is employed for varying the speed of the motor whereby allintermediate speeds may be obtained. In the form-of {construction shown,which'is by way of example-only, the-motor 22 is mounted within theRotatably mounted on body ill at the rear thereof and is provided with acooling fan 35, as is usual in such constructions.

Suitable mechanism is provided for driving the This mechanism the formof speed conventional type carriage from the I motor 82. comprises atransmission 36 in redueingmechanism of the and the change speedmechanism 83, (see Fig. 7.). The change speed mechanism comprises ashaft 81 jou'rnaled in a housing 88 which in turn secured'within thebody of, the carriage by' suitable mechanism as by means of the screws89 (see Fig. 8) The forward end of the shaft 81 isshaftfl and areslidable along the same. Each The housing 38 is provided with a countershaft' 54 on which are pf these clutch members are provided with clutchteeth at opposite sides thereof for engaging corresponding clutch teethon the adjacent gears.

} mounted the two gear clusters 55 and 56-. The gear cluster 55comprises the gears 51, 58 and 59 which are'in permanent en;-

"gagement with the gears 45, 46 and 49, respec- 1 The power shaft 63tively.

e Fig. 8) is provided witha spur gear 64 which is permanently inmesh'with the gear 45 on.

the shaft 81. V

Suitable means are provided foroperating the clutches 52 and 53. In theform of construction 1 55 and 55 are shown, suitable push-buttons 65,66, 61 and 68 are provided for this purpose. The push buttons adapted tooperate the clutch 52 in a manner that will now be described. Theclut'ch 52 is provided with an annular recess 88 which is The yoke 1| isprovided with a sleeve 12 which is journaled on the inwardly extendingends of studs 18 and 14 (in Fig. 8). ;These studs are threaded inthewalls of the housing 88. The

' sleeves "have rigidly connected thereto two laterally extendingshifter arms and 16 (see Fig.

,. 7) which are pivotally connected to the push butteethassociatedwiththe drive wlll be through the gears 45, 51, 58 and 46.--

ton rods 65 and 56.

The clutch 5811s provided with a yoke 11 respectively. When the buttonsare in .tlon shown in Fig. 7 -that is depressed and the clutch tion, theyoke 1| is shifted toward the left, which will cause the teeth of'theclutch 52 to engage those shifted with the gear and the drivethen willbe throughthe gears 64 .(see Figs. 7 and 8), l5 and the clutch s:directl'y'to the shaft 31. This gives direct drive which may be termedhigh-speed. When the button 85 is depressed, it will cause theyoke toreact in the opposite direction, thereby. moving the clutch 52 to theright and causing the teeth of the clutch 62 toengage gea'r-46,-then theis, when the button 86 when the clutch s2 is in neutral position and thebutton61isdepressed,theclutch88willbemoved 48 which engages a gearthe.shaft 81 are the the clutch members in the other is in use.

from the transmission 35 the button 61 adapted to be engaged by inwardlyextending fln- 'gers on the yoke 1| (see Figs. 7 and 8).

push buttons'or rods 61v and so,"

flh osl teeth are adapted e gear 88 carried by a shaftextendingupwardly,

581s in neutral p0si- The as by the sleeve is provided on theupper endof the shaft 84 for .4

toward the right, causing the teeth of the clutch 58 to engage will thenbe througnvthe gears 45,. 51, 59, 49, 5| 8|, 62 and 41. When the button68 is depressed while the clutch 52 is in neutralposition, the clutch 58will be moved towardthe left, causing engagement of the teeth thereofwith the teeth thosenf the gear 41 and the drive of the gear 5| andthedrive will then be through I the gears 45, 51, 59, 49 and 5|.

'I'he gears 51, 49 and 41 are of greater diameter than the'correspondinggears 45, 58 and 62 with which they mesh while the gears 58, 6|, 46 and5| areof the same diameter.

As a result, low or first speed is obtained when the button 61 isdepressed, second speed when the button 68 is depressed and third speedwhen the button 65 is depressed.

In order to prevent injury to the change speed mechanism during thechanging. of the gears, suitable means are provided for locking one ofneutral'position, while Any suitable mechanism may be'employed for t spurpose. In the form of construction shown, the yokes 69 and 11 areprovided with upward extensions 8| and 82 ed to engage angular slots ornotches 81 and 88 in the ends of a keeper 85 which is pivoted as at 86.The parts are so constructed that when one having laterally extending 25pins 83 and 84 thereon. .These keepers are adaptof the clutch members isin operative position, as, 30

, for instance, when the clutch 52 is in the position shown in Fig. 7,the pin 84 will be. engaged in the slot 88, which will prevent movementof the clutch 58 until the clutch 52 is moved to neutral position.

In like manner, when the clutch 58 is in Opera;-' A tive position,

the pin 88 will engage in the angular recess 81 and prevent-movement. ofthe clutch 52 until the clutch 58 is moved to neutral position. 'It willthus beseen that when either.

the button 65 or 66 is depressed, the "clutch 58 is held' in neutralposition, and, likewise; when either or 68 is depressed, the clutch 52is held in .neutral positio Appropriate means are provided forsupportingthe torch.- In the form of construction shown,

a base orsupporting plate 88 is slidably mounted is mounted on thisplate. Preferably, though not necessarily, the top of the casing I2 isdepressed 'at' its forward end and is provided with a dovetail groove 8|extending-transversely thereof (see Flgs.'3 and '1) in which the plate88 is adapted to slide. Suitable means are provided for adjusting theplate along the groove. In the form of construction shown, the plate isprovided-with rack teeth 82 ,(see Figs. land?) which may be on a thecarriage and the torch supporting means rack bar 88 rigidly conhected tothe plate. These to be engaged by a pinion or from the casing [2 (seeFigs. .2 and 7). shaft 84 is held in position by any suitable in member86. A hand wheel 86 8) oppoaltethiegear88.'

Both ends ofthe plate a are provided with split sleeves '81 forreceiving within either of which maybe rotatably mounted the lower end,

88 of the supporting standard. A clamp screw |8 8(see Fig. 5) whichmay;be of the convennected by a cross tional Allen set screw, is providedfor clamping the end 90 of the standard 99 in any adjusted position.

The standard 99 (see Figs. 3 and 5) comprises a base IN on whichisrigidly secured the uprights I02 and I03. are spaced apart and theirupper ends are conbar I04. A suitable journal block I05 is slidablymounted on the posts I02 and I03 and is raised and lowered by means ofthe threaded rod I06 which is journaled in the cross bar I00 and engagesa threaded opening'in the block I05.

The rod I08 extends above the cross bar and is provided with a crank I0Ifor rotating said rod. The journal block I05 has rotatably mountedtherein an adjusting sleeve I08 within which is slidably and rotatablymounted a torchsupporting arm I09 (see Fig. 5). The sleeve I00 isprovided' with clamping ears IIO which are adapted to receive a clampingscrew III whereby the arm I09 may be clamped in adjusted position withinthe sleeve I08. Suitable means are provided for rotating the sleeve I08within the block I05. As shown, the block is provided with.a pluralityof teeth II2 extending around its periphery, which are adapted to beengaged by a worm II3. The outer end of the worm haft I I3 may beprovided with a knurled knob Ill, by means of which the worm may berotated for angularly adjusting the sleeve I08 within the block I05.

The block I05 is provided with clamping ears 60 which are adapted toreceive a clamping screw 50 for clamping the sleeve I00 in adjustedposition.

The block I05 is preferably, though not necessarily, provided with undercut grooves Ill and ,5 (see Fig. 6) which are adapted to engage inclinedsurfaces on the outer wall of the standards I02 and I03, as shown insaid figure.

The outer end of the arm I09 (see Fig. 6) terminates in a split socketor sleeve M6 for receiving the torch I20. The torch is held in adjustedposition by the sleeve I III which is clamped against the same by anysuitable means, as the set screw H8. 9

In the operation of the device, when it is desired to arrange the torchat an angle in a plane parallel. to the direction of travel, the knobII4 may be turned, or, if desired, the set screw III may be loosened,hand tothe desired angle. When it is desirable to move the torchoutwardly from the carriage, this may be done by rotating the hand wheel96 which will move the plate 89 outwardly or the gear III may beloosened and the arm I09 slid through the sleeve I08. When, it isdesired to arrange the torch at an angle transversely to the directionof travel, the torch is first moved outwardly and then the arm I09rotated, the screw I00 loosened and the support 89 rotated about itsvertical axis through an angle of 90. It will thus be seen that the armI09 may be rotated about two axes at right angles to each other, therebygiving universal movement or adjustment to the torch I20.

Means are provided for making circular cuts with the apparatus. Asshown, a radius memher or rod II9 (see Figs. 1 and 4) is provided fordetermining the radius of the curve to be cu This member is adapted tobe detachably mount ed in,a socket I2I in the side of the casing I.) andheld therein by any suitable means, as the Allen set screw' I22. 1

slidably mounted on the outer end of the rod arm is pointed at its lowerend- The uprights I02 and I03 and the 'arm I09 turned by and extendingupwardly ably and H9 is a head I23 which is held in adjusted position bythe set screw I24. The head I23 is provided with a sleeve I25 in whichis slidably mounted a centering arm I25. The centering and is adapted toengage a depression for. guiding the carriage in its circular movement.

when it is. desired to make circular cuts, a depression in the center ofthe circle is made, the radius rod H9 is attached, the side of thecarriage adjacent the rod is elevated and the centering arm is depressedinto the depression and clamped in position to'hold the inner wheelselevated whereby the outer wheels of the carriage are free to move in acircle about the depression. The clamp 3I of the outer caster isreleased so that the wheel is free to turn about a vertical axis duringthe circular movement 'of the carriage.

Suitable meansare provided for what might be termed free wheeling-thatis, for moving or transporting the apparatus without operating areadapted to be forced downwardly by a thrust the upper end of whichengages spiral threads I32 in the lower end of an adjusting member (seeFig. 4) I33. The adjusting member I33 extends to the upper surface ofthe casing I2 and is provided with a handle I34 for operating the same.1

When it is desired to manually move the carriage, the wheel I28 isdepressed by turning the handle I34 which will, through the threads I32and thrust member I3I, elevate the front of the carriage, thus raisingthe front wheels I9 and M of the carriage free from the supportingsurface. The carriage may then be moved without turning the wheels I9and 2I.

We claim as our invention:-

1. In a gas cutting apparatus, a carriage, a torch support, a torchslidable through said support, means for clamping said torch in positionmember I3 I,

on said support,said support comprising a base plate movabletransversely to said carriage, an

upright standard mounted on said plate to rotate about a vertical axis,and a: supporting arm, slidablyand rotatably mounted on said standard.

2. Ina gas cutting apparatus, a carriage hav-' ing a casing providedwith a downward offset in its upper portion at the forward end, aslideway in said downward ofiset portion, a supporting member slidablymounted in said slideway, a standard pivotally mounted in said membertherefrom, an arm slidrotatably mounted on said standard, anda clampingsleeve carried by said arm.

3. In a. gas cutting apparatus, a carriage comprising a casing, an axleextending through said casing, wheels on said axle for supporting theforward end of said carriage, a plate pivotally secured to said axle andextending rearwardly therefrom beneath said carriage, wheels carried bythe free end of said plate, and means extending to'theexterior of saidcasing for forcing thefree end of said plate downwardly for elevatingone end of said carriage and supporting the same on said last-namedwheels.

4. In a gas cutting machine, a carriage. a supuniversal con-n said torchmay be adjusted at an angle to said carriage both longitudinally andtransversely thereof, a

6. In a gas cutting apparatus, a carriage, change speed gearing fordriving said can-iage at diilerent speeds, said gearing comprising aplurality of clutch members, and meansfor selectively moving any (me 01'said clutch members into operative position and simultaneously lockingthe remainder in neutral position, and a variable speed motor forperating said carriage through said gearing.

rearwardly from means ior swivelly connecting said wheels to saidstandard and rotatable about' 5. In a gas cutting apparatus, a carriagehavsaid slideway,

wheel onthe free end of said member, a thrust plate, whereby. member forraising and lowering said wheel, and.

1m. and means for locking said wheels from angular movement, a platepivotally connected to said axle, wheel means at the free end oi. saidplate, and means for raising and lowering said plate for-lowering andraising the iorward end of said carriage.

8. In a gas cutting apparatus, a carriage, a, wheel at each side of saidcarriage at each end thereof, an axle for the, front wheels, and meansfor elevating one end of said carriage, said means comprising a memberhinged to said axle, a

means for raising and lowering said thrust member. v

'9. In a gas cutting apparatus, a carriage, torch supporting mechanismadiustably mounted on said carriage, said mechanism comprising a pairofupstanding members,;a slide block slidably.

mountedon said member a sleeve journaled in said block, means forrotating said sleeve, a'

torch arm .slidably mounted in said sleeve, means for locking said armto said sleeve, and means for locking said sleeve against rotation.

10. In a gas cutting apparatus, a carriage com-, prising a casing,atorch supporting mechanism adjustably mounted on said carriage, saidmechanism comprising a supporting plate slidably mounted. directly onsaid casing, said plate having a bearing on each end thereof forreceiving 30 the lower end of a supporting standard, and means forselectively clamping said end in either of said bearings. 4 JOHN C.GLAUM, Ja.

FRED STONEBERG. 35

